<template>
    <table v-if="treeData.name">
      <tr>
        <td :colspan="treeData.children ? treeData.children.length * 2 : 1" :class="{parentLevel: treeData.children, extend: treeData.children && treeData.extend}">
          <div :class="{node: true, hasMate: treeData.mate}">
            <div class="person" @click="$emit('click-node', treeData)">
              <div class="item">
                <div :class="['name', treeData.date ? '' : 'no-date']">{{treeData.name}}</div>
                <div class="name" v-if="treeData.date">{{treeData.date}}</div>
              </div>
            </div>
          </div>
          <!-- <div class="extend_handle" v-if="treeData.children" @click="toggleExtend(treeData)"></div> -->
        </td>
      </tr>
      <tr v-if="treeData.children && treeData.extend">
        <td v-for="(children, index) in treeData.children" :key="index" colspan="2" :class="['childLevel', children.done ? 'childLevelDone' : '']">
          <TreeChart :json="children" @click-node="$emit('click-node', $event)"/>
        </td>
      </tr>
    </table>
</template>

<script>
export default {
  name: "TreeChart",
  props: ["json"],
  data() {
    return {
      treeData: {}
    };
  },
  watch: {
    json: {
      handler: function(Props) {
        let extendKey = function(jsonData) {
          jsonData.extend =
            jsonData.extend === void 0 ? true : !!jsonData.extend;
          if (Array.isArray(jsonData.children)) {
            jsonData.children.forEach(c => {
              extendKey(c);
            });
          }
          return jsonData;
        };
        if (Props) {
          this.treeData = extendKey(Props);
        }
      },
      immediate: true
    }
  },
  methods: {
    toggleExtend: function(treeData) {
      treeData.extend = !treeData.extend;
      this.$forceUpdate();
    }
  }
};
</script>

<style scoped lang="less">
@import "../utils/theme.less";

table {
  border-collapse: separate !important;
  border-spacing: 0 !important;
}
td {
  position: relative;
  vertical-align: top;
  padding: 0 0 50px 0;
  text-align: center;
}
// .extend_handle {
//   position: absolute;
//   left: 50%;
//   bottom: 30px;
//   width: 10px;
//   height: 10px;
//   padding: 10px;
//   margin-left: 2.5px;
//   transform: translate3d(-15px, 0, 0);
//   cursor: pointer;
// }
// .extend_handle:before {
//   content: "";
//   display: block;
//   width: 100%;
//   height: 100%;
//   box-sizing: border-box;
//   border: 2px solid;
//   border-color: #ccc #ccc transparent transparent;
//   transform: rotateZ(135deg);
//   transform-origin: 50% 50% 0;
//   transition: transform ease 300ms;
// }
// .extend_handle:hover:before {
//   border-color: #333 #333 transparent transparent;
// }
// .extend .extend_handle:before {
//   transform: rotateZ(-45deg);
// }
.extend::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 15px;
  height: 40px;
  border-left: 2px solid #ccc;
  transform: translate3d(-1px, 0, 0);
}
.childLevel::before {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 100%;
  height: 15px;
  border-left: 2px solid #ccc;
  transform: translate3d(-1px, 0, 0);
}
.childLevel::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: -15px;
  border-top: 2px solid #ccc;
}
.childLevel:first-child:before,
.childLevel:last-child:before {
  display: none;
}
.childLevel:first-child:after {
  left: 50%;
  height: 15px;
  border: 2px solid;
  border-color: #ccc transparent transparent #ccc;
  /* border-radius: 6px 0 0 0; */
  transform: translate3d(1px, 0, 0);
}
.childLevel:last-child:after {
  right: 50%;
  height: 15px;
  border: 2px solid;
  border-color: #ccc #ccc transparent transparent;
  /* border-radius: 0 6px 0 0; */
  transform: translate3d(-1px, 0, 0);
}
.childLevel:first-child.childLevel:last-child::after {
  left: auto;
  border-radius: 0;
  border-color: transparent #ccc transparent transparent;
  transform: translate3d(1px, 0, 0);
}

.childLevelDone {
  .item{
    background: @green !important;
  }
  
}
.node {
  position: relative;
  display: inline-block;
  /* width: 11vw; */
  box-sizing: border-box;
  text-align: center;
}
.node .person {
  position: relative;
  display: inline-block;
  z-index: 2;
  // max-width: 15vw;
  width: 9vw;
  // background: @primary;
  color: #fff;
  font-size: 1.3rem;
  padding: 0.5vw;
  .item {
    width: 100%;
    background: @primary;
    padding: 0.5vw;
    border-radius: 0.5vw;
    height: 4.2vw;
  }
}
.node .person .name {
  line-height: 1.6vw;
  overflow: hidden;
  width: 100%;
  white-space: nowrap;
  text-overflow: ellipsis;
}
.node .person .no-date{
  height: 100%;
  white-space: pre-wrap;
}
.node.hasMate::after {
  content: "";
  position: absolute;
  left: 2em;
  right: 2em;
  top: 2em;
  border-top: 2px solid #ccc;
  z-index: 1;
}
.node.hasMate .person:last-child {
  margin-left: 1em;
}
.landscape {
  transform: rotate(-90deg);
  padding: 0 4em;
}
.landscape .node {
  text-align: left;
  height: 8em;
  width: 8em;
}
.landscape .person {
  position: relative;
  transform: rotate(90deg);
  padding-left: 4.5em;
  height: 4em;
  top: 4em;
  left: -1em;
}
.landscape .person .avat {
  position: absolute;
  left: 0;
}
.landscape .person .name {
  height: 4em;
  line-height: 4em;
}
.landscape .hasMate {
  position: relative;
}
.landscape .hasMate .person {
  position: absolute;
}
.landscape .hasMate .person:first-child {
  left: auto;
  right: -4em;
}
.landscape .hasMate .person:last-child {
  left: -4em;
  margin-left: 0;
}
</style>